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Chapter 18 Atomic and Nuclear Physics-22
1.
If we burn 1 tonne of coal, then how much energy is released?
a) 3.6 × 10
10
J
b) 3.6 × 10
11
J
c) 6.7×10
10
J
d) 6.7×10
11
J
2.
During the fission of 1kg of Uranium-235, how much energy is released?
a) 6.7×10
11
J
b) 3.6 × 10
11
J
c) 3.6 × 10
10
J
d) 6.7×10
10
J
3.
If we burn .................of coal then about 3.6 × 1010 J of energy is released?
a) 1 tonne
b) 1 kg
c) 100 tonne
d) 10 kg
4.
During the fission of ..............of Uranium-235 about 6.7×1011 J of energy is released?
a) 100 tonne
b) 1kg
c) 1 tonne
d) 10 kg
5.
What is the half-life of hydrogen?
a) 12.3 years
b) 138 days
c) 8.07 days
d) 30 years
6.
What is the half-life of tritium?
a) 12.3 years
b) 8.07 days
c) 30 years
d) 138 days
7.
Which isotope of hydrogen has half-life of 12.3 years?
a) Deutrium
b) Tritium
c) None of these
d) Protium
8.
Which of the following element has half-life of 12.3 years?
a) Carbon
b) Iodine
c) Cobalt
d) Hydrogen
9.
What is the half-life of carbon?
a) 7.1 minutes
b) 5730 years
c) 12.3 days
d) 12.3 years
10.
Which of the following radiations are produced by hydrogen transmutation?
a) β & γ
b) α, β
c) β
d) α, γ
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